Patent US4522779A successfully refreshed from Google Patents.
Patent US2522487A successfully refreshed from Google Patents.
US2522487A
Expired / Lapsed
US
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Dielectric heating apparatus
Assignee: Girdler Corp
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Filing: 1948-02-27
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Granted: 1950-09-12
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Expires: 1968-02-27
Abstract
No abstract record available.
Inventors
- 👤 Henry R Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:22
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/02; H04B1/03; H05; H05B; H05B6/00; H05B6/46; H05B6/62; Y; Y10; Y10S; Y10S264/00; Y10S264/46; Y10S264/65; Y10S425/00; Y10S425/013; Y10S425/039
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |